Stapler

Abstract

Clincher holders hold a pair of clinchers for bending the legs of a staple driven by a driver, and have slanting guide faces for guiding the tips of the legs of the staple toward the clinchers. In a stapling table for receiving sheets of paper, an opening is made. The clincher holders are movable inside the opening. Drop-preventing portions for preventing the sheets of paper from dropping inside the opening in stapling are projected from opening edges of the opening toward the inside of the opening.

1. A stapler comprising:
 a driver for driving a staple in a first direction, wherein the staple has a crown straightly extending in a second direction perpendicular to the first direction and the staple also has legs extending in the first direction from both ends in the second direction of the crown, 
 a table for receiving sheets of paper; 
 an opening formed in the table; 
 a clincher holder movable inside the opening; and 
 a drop-preventing portion projected from an opening edge of the opening toward an inside of the opening, 
 wherein the clincher holder is movable with respect to the table in a third direction which is perpendicular to the first direction and the second direction. 
 
     
     
       2. The stapler according to  claim 1 , wherein an upper surface of the drop-preventing portion is substantially coplanar with an upper surface of the table. 
     
     
       3. The stapler according to  claim 1 , further comprising:
 a shaft extending in the third direction; and 
 a spring, 
 wherein the clincher holder is movable along the shaft, and 
 the clincher is urged in the third direction by the spring. 
 
     
     
       4. A stapler comprising:
 a table for receiving sheets of paper; 
 an opening formed in the table; 
 a clincher holder holding at least one clincher; and 
 a drop-preventing portion projected from an opening edge of the opening toward an inside of the opening, 
 wherein the at least one clincher rotates in a plane perpendicular to a front-and-rear direction, 
 the clincher holder is movable in the front-and-rear direction, and 
 an upper surface of the drop-preventing portion is substantially coplanar with an upper surface of the table. 
 
     
     
       5. The stapler according to  claim 4 , wherein the drop-preventing portion is integrally formed with an opposed opening edge of the opening so as to project from the opening edge. 
     
     
       6. The stapler according to  claim 4 , wherein the clincher holder has a right guiding portion and a left guiding portion. 
     
     
       7. The stapler according to  claim 6 , wherein each of the right guiding portion and the left guiding portion has a pair of guide faces respectively slanting in a front-and-rear direction. 
     
     
       8. The stapler according to  claim 6 , wherein the opening has a length longer in a right-and-left direction than in the front-and-rear direction, and
 the drop-preventing portion is projected from the opening edge toward the inside of the opening between a region of the opening opposed to the right guiding portion and a region of the opening opposed to the left guiding portion. 
 
     
     
       9. The stapler according to  claim 4 , further comprising:
 a shaft extending in the front-and-rear direction, 
 wherein the clincher holder is movable on the shaft. 
 
     
     
       10. The stapler according to  claim 4 , wherein the opening has a length longer in a right-and-left direction than in a front-and-rear direction, and
 the drop-preventing portion comprises
 a front drop-preventing portion which is projected toward the inside of the opening at a substantially central position in the right-and-left direction of a front opening edge, and 
 a rear drop-preventing portion which is projected toward the inside of the opening at a substantially central position in the right-and-left direction of a rear opening edge. 
 
 
     
     
       11. The stapler according to  claim 4 , wherein the table has a rectangular shape, and
 wherein the opening has a rectangular shape. 
 
     
     
       12. The stapler according to  claim 4 , wherein an upper surface of the clincher holder is located lower than an upper surface of the table. 
     
     
       13. The stapler according to  claim 4 , further comprising:
 a frame, wherein the table is formed within the frame; and 
 a spring, wherein one end of the spring is secured to the clincher holder and the other end of the spring is secured to the frame. 
 
     
     
       14. The stapler according to  claim 13 , further comprising;
 a shaft attached to the frame, wherein the clincher holder is supported on the shaft to be movable in the front-and-rear direction.